Suggestion: Include Content Security Policy & Whitelist plugin by default

[brandyscarney]

From @joshuamorony on April 23, 2016 23:17

I feel like one of the most common issues people are running into is not including the whitelist plugin / not having a content security policy defined in index.html. I think the concept of the CSP tag is very confusing as well.

Would it be reasonable to add a default Content Security Policy tag to the generated index.html file?

Copied from original issue: ionic-team/ionic-framework#6296

[iignatov]

There's some additional information about the Content Security Policy in the following forum thread:
https://forum.ionicframework.com/t/refuse-to-load-the-image-svg-issue-with-search-bar-icons/47234/2